«Equipment and technologies for oil and gas complex»

Evaluation of high-frequency vibration of process pipelines of centrifugal compressors by sound level

UDC: 622.691.4
DOI: -

Authors:

¹ National University of Oil and Gas "Gubkin University", Moscow, Russia

Keywords: centrifugal compressor, pipeline, vibration, vibration velocity, shell vibrations, sound, sound level, sound pressure, octave frequency spectrum, sound insulation, soundproof casing

Annotation:

Currently, at almost all compressor stations (CS) of PJSC “Gazprom”, the technological pipelines (TP) of compressors are covered by heat-insulating covers, which in most cases perform the functions of protecting personnel from the sound generated by TP. It reduces the controllability of pipelines, in particular, the ability to measure pipes vibration. With low-frequency vibration, which is considered as vibrations of the core system, this problem is solved quite simply by cutting holes in the casing to install vibration sensors in two orthogonal directions of the cross section of interest. To evaluate the high-frequency vibrations that dominate the vibration of the pipelines of centrifugal compressors and are the source of sound at TP, this measurement method can give an error of up to 300 % or more. The authors of the article consider the results of experimental-computational studies of the sound dependence of centrifugal compressors TP on vibration, suggest a method for measuring high-frequency vibration as well as correction of the existing formula for calculating vibration based on sound measurements, taking into account the sound insulation of the casing.

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